东方红<3>、<5>型内燃机车使用的12180ZL型柴油机除了气缸套穴蚀以外,缸套裂纹也日趋严重,成为急待解决的问题之一。(一) 气缸套裂纹的概况我段从1977年开始使用东方红<3>、<5>型内燃机车,其柴油机缸套通过几年的运用情况来看,耐磨性好,一般一个架修期的磨耗量不超过0.03毫米,缸套穴蚀也较轻微,但是其裂纹逐年增多。历年来我段缸套裂纹、穴蚀统计见表1。从表1可以看出,缸套穴蚀在我段不是主 12180ZL diesel engine used by Dongfanghong <3> and <5> diesel locomotives not only has cavitation of cylinder liner, but also has increasingly serious cylinder liner cracks, which has become an urgent problem to be solved. (A) Overview of the cylinder liner cracks I paragraph from the East began in 1977, <3>, <5> diesel locomotive, the diesel engine liner through the use of a few years of view, good wear resistance, generally a shelf repair Period of wear does not exceed 0.03 mm, cylinder liner cavitation is also minor, but the crack increases year by year. Over the years I paragraph cylinder liner cracks, pitting statistics shown in Table 1. It can be seen from Table 1, cylinder liner cavitation in my paragraph is not the main